VOID
VIOSerialPortClose(
IN WDFFILEOBJECT FileObject
)
{
PRAWPDO_VIOSERIAL_PORT pdoData = RawPdoSerialPortGetData(
WdfFileObjectGetDevice(FileObject));
TraceEvents(TRACE_LEVEL_INFORMATION, DBG_CREATE_CLOSE,
"--> %s\n", __FUNCTION__);
if (!pdoData->port->Removed && pdoData->port->GuestConnected)
{
VIOSerialSendCtrlMsg(pdoData->port->BusDevice, pdoData->port->PortId,
VIRTIO_CONSOLE_PORT_OPEN, 0);
}
pdoData->port->GuestConnected = FALSE;
WdfSpinLockAcquire(pdoData->port->InBufLock);
VIOSerialDiscardPortDataLocked(pdoData->port);
WdfSpinLockRelease(pdoData->port->InBufLock);
WdfSpinLockAcquire(pdoData->port->OutVqLock);
VIOSerialReclaimConsumedBuffers(pdoData->port);
WdfSpinLockRelease(pdoData->port->OutVqLock);
TraceEvents(TRACE_LEVEL_INFORMATION, DBG_CREATE_CLOSE,
"<-- %s\n", __FUNCTION__);
}
NTSTATUS
VIOSerialPortEvtDeviceD0Exit(
IN WDFDEVICE Device,
IN WDF_POWER_DEVICE_STATE TargetState
)
{
PVIOSERIAL_PORT Port = RawPdoSerialPortGetData(Device)->port;
PPORT_BUFFER buf;
PSINGLE_LIST_ENTRY iter;
UNREFERENCED_PARAMETER(TargetState);
TraceEvents(TRACE_LEVEL_INFORMATION, DBG_INIT, "--> %s\n", __FUNCTION__);
WdfIoQueuePurge(Port->ReadQueue, WDF_NO_EVENT_CALLBACK, WDF_NO_CONTEXT);
WdfIoQueuePurge(Port->WriteQueue, WDF_NO_EVENT_CALLBACK, WDF_NO_CONTEXT);
WdfIoQueuePurge(Port->IoctlQueue, WDF_NO_EVENT_CALLBACK, WDF_NO_CONTEXT);
VIOSerialDisableInterruptQueue(GetInQueue(Port));
WdfSpinLockAcquire(Port->InBufLock);
VIOSerialDiscardPortDataLocked(Port);
Port->InBuf = NULL;
WdfSpinLockRelease(Port->InBufLock);
WdfSpinLockAcquire(Port->OutVqLock);
VIOSerialReclaimConsumedBuffers(Port);
WdfSpinLockRelease(Port->OutVqLock);
while (buf = (PPORT_BUFFER)VirtIODeviceDetachUnusedBuf(GetInQueue(Port)))
{
VIOSerialFreeBuffer(buf);
}
iter = PopEntryList(&Port->WriteBuffersList);
while (iter != NULL)
{
PWRITE_BUFFER_ENTRY entry = CONTAINING_RECORD(iter,
WRITE_BUFFER_ENTRY, ListEntry);
ExFreePoolWithTag(entry->Buffer, VIOSERIAL_DRIVER_MEMORY_TAG);
ExFreePoolWithTag(entry, VIOSERIAL_DRIVER_MEMORY_TAG);
iter = PopEntryList(&Port->WriteBuffersList);
};
TraceEvents(TRACE_LEVEL_INFORMATION, DBG_INIT, "<-- %s\n", __FUNCTION__);
return STATUS_SUCCESS;
}
BOOLEAN
VIOSerialWillWriteBlock(
IN PVIOSERIAL_PORT port
)
{
BOOLEAN ret = FALSE;
TraceEvents(TRACE_LEVEL_INFORMATION, DBG_PNP,"--> %s\n", __FUNCTION__);
if (!port->HostConnected)
{
return TRUE;
}
ret = VIOSerialReclaimConsumedBuffers(port);
TraceEvents(TRACE_LEVEL_INFORMATION, DBG_PNP,"<-- %s\n", __FUNCTION__);
return ret;
}
NTSTATUS
VIOSerialPortEvtDeviceD0Exit(
IN WDFDEVICE Device,
IN WDF_POWER_DEVICE_STATE TargetState
)
{
PVIOSERIAL_PORT Port = RawPdoSerialPortGetData(Device)->port;
PPORT_BUFFER buf;
PSINGLE_LIST_ENTRY iter;
TraceEvents(TRACE_LEVEL_INFORMATION, DBG_INIT, "--> %s TargetState: %d\n",
__FUNCTION__, TargetState);
Port->Removed = TRUE;
VIOSerialDisableInterruptQueue(GetInQueue(Port));
WdfSpinLockAcquire(Port->InBufLock);
VIOSerialDiscardPortDataLocked(Port);
Port->InBuf = NULL;
WdfSpinLockRelease(Port->InBufLock);
VIOSerialReclaimConsumedBuffers(Port);
while (buf = (PPORT_BUFFER)virtqueue_detach_unused_buf(GetInQueue(Port)))
{
VIOSerialFreeBuffer(buf);
}
iter = PopEntryList(&Port->WriteBuffersList);
while (iter != NULL)
{
PWRITE_BUFFER_ENTRY entry = CONTAINING_RECORD(iter,
WRITE_BUFFER_ENTRY, ListEntry);
ExFreePoolWithTag(entry->Buffer, VIOSERIAL_DRIVER_MEMORY_TAG);
WdfObjectDelete(entry->EntryHandle);
iter = PopEntryList(&Port->WriteBuffersList);
};
TraceEvents(TRACE_LEVEL_INFORMATION, DBG_INIT, "<-- %s\n", __FUNCTION__);
return STATUS_SUCCESS;
}
VOID
VIOSerialPortCreate(
IN WDFDEVICE WdfDevice,
IN WDFREQUEST Request,
IN WDFFILEOBJECT FileObject
)
{
PRAWPDO_VIOSERIAL_PORT pdoData = RawPdoSerialPortGetData(WdfDevice);
NTSTATUS status = STATUS_SUCCESS;
UNREFERENCED_PARAMETER(FileObject);
TraceEvents(TRACE_LEVEL_INFORMATION, DBG_CREATE_CLOSE,
"%s Port id = %d\n", __FUNCTION__, pdoData->port->PortId);
if (pdoData->port->Removed)
{
TraceEvents(TRACE_LEVEL_INFORMATION, DBG_CREATE_CLOSE,
"Connect request on removed port id %d\n", pdoData->port->PortId);
status = STATUS_OBJECT_NO_LONGER_EXISTS;
}
else if (pdoData->port->GuestConnected == TRUE)
{
TraceEvents(TRACE_LEVEL_INFORMATION, DBG_CREATE_CLOSE,
"Guest already connected to port id %d\n", pdoData->port->PortId);
status = STATUS_OBJECT_NAME_EXISTS;
}
else
{
pdoData->port->GuestConnected = TRUE;
WdfSpinLockAcquire(pdoData->port->OutVqLock);
VIOSerialReclaimConsumedBuffers(pdoData->port);
WdfSpinLockRelease(pdoData->port->OutVqLock);
VIOSerialSendCtrlMsg(pdoData->port->BusDevice, pdoData->port->PortId,
VIRTIO_CONSOLE_PORT_OPEN, 1);
}
WdfRequestComplete(Request, status);
TraceEvents(TRACE_LEVEL_INFORMATION, DBG_CREATE_CLOSE,
"<-- %s\n", __FUNCTION__);
}
BOOLEAN
VIOSerialWillWriteBlock(
IN PVIOSERIAL_PORT port
)
{
BOOLEAN ret = FALSE;
TraceEvents(TRACE_LEVEL_INFORMATION, DBG_PNP,"--> %s\n", __FUNCTION__);
if (!port->HostConnected)
{
return TRUE;
}
WdfSpinLockAcquire(port->OutVqLock);
VIOSerialReclaimConsumedBuffers(port);
ret = port->OutVqFull;
WdfSpinLockRelease(port->OutVqLock);
TraceEvents(TRACE_LEVEL_INFORMATION, DBG_PNP,"<-- %s\n", __FUNCTION__);
return ret;
}
